Selected data (in thousands) from the statement of income of Ridgewood Inc. are shown below. Using vertical analysis, calculate the percentage of the base amount for each year. (Round answers to 1 decimal place, e.g. 5.2%) 2020 2021 Percentage Amount Amount Percentage Sales $1,907 100 % $2.057 100 % % Cost of goods sold 1,616 1,690 1 % % Gross profit 291 367 11.4 % 10.1 % Operating expenses 219 210 % 96 Income before income tax 72 157 % % 31 14 Income tax expense % % $126 $58 Net income